The Damper,flue, cataloged under National Stock Number 4520-01-658-0470, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. The manufacturer of record is Itw Food Equipment Group Llc Dba Gaylord Industries. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-658-0470 |
| Primary Part Number | 2040-DA0-825399 |
| Item Name | Damper,flue |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Itw Food Equipment Group Llc Dba Gaylord Industries |
| Status | ACTIVE |
| Model Number | N 68G-8-24-16-L-SS-440 G |
| Mounting Method | SCREW |
| Shape | RECTANGULAR |
| Material | STEEL CORROSION RESISTING |
| Operation Method | MANUAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 2040-DA0-825399 PRIMARY | Itw Food Equipment Group Llc Dba Gaylord Industries (USA) |
| Reference | Meaning |
|---|---|
| N-2131-REV E | 5/9 Secondary reference Itw Food Equipment Group Llc Dba Gaylord Industries |
| 10-2604-REV08 | D/9 Drawing number reference only Itw Food Equipment Group Llc Dba Gaylord Industries |
NSN 4520-01-658-0470 is a Damper,flue, manufactured by Itw Food Equipment Group Llc Dba Gaylord Industries, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-658-0470 has 1 manufacturer part number on file: 2040-DA0-825399 (Itw Food Equipment Group Llc Dba Gaylord Industries).
1 possible match (shared part number, not a government interchangeability claim): 4520-01-658-0476. Verify interchangeability with system specifications before substitution.
Key specifications for 2040-DA0-825399: Model Number: N 68G-8-24-16-L-SS-440 G; Mounting Method: SCREW; Shape: RECTANGULAR; Overall Length: 16.00 INCHES NOMINAL IN. 5 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.